Gold solubility in supercritical hydrothermal brines measured in synthetic fluid inclusions

Jr Vlcek A.; J. A. Mavrogenes

Gold solubility in supercritical hydrothermal brines measured in synthetic fluid inclusions

Research output: Contribution to journal › Short survey › peer-review

Abstract

Metallic gold dissolves in H₂S-containing supercritical water to produce the complex Au(HS)(H₂S)₃. A temperature decrease below 400°C and/or pressure decrease lead to a decomposition of this complex and, hence, to a rapid precipitation of metallic gold. This chemistry represents a chemical mechanism underlying leaching of metallic gold from deep parts of Earth's crust, its transport in hydrothermal solutions, and subsequent deposition in gold veins.

Original language	English
Pages (from-to)	353-356
Number of pages	4
Journal	Chemtracts
Volume	13
Issue number	5
Publication status	Published - May 2000

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title = "Gold solubility in supercritical hydrothermal brines measured in synthetic fluid inclusions",

abstract = "Metallic gold dissolves in H2S-containing supercritical water to produce the complex Au(HS)(H2S)3. A temperature decrease below 400°C and/or pressure decrease lead to a decomposition of this complex and, hence, to a rapid precipitation of metallic gold. This chemistry represents a chemical mechanism underlying leaching of metallic gold from deep parts of Earth's crust, its transport in hydrothermal solutions, and subsequent deposition in gold veins.",

author = "{Vlcek A.}, Jr and Mavrogenes, {J. A.}",

year = "2000",

month = may,

language = "English",

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journal = "Chemtracts",

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T1 - Gold solubility in supercritical hydrothermal brines measured in synthetic fluid inclusions

AU - Vlcek A., Jr

AU - Mavrogenes, J. A.

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N2 - Metallic gold dissolves in H2S-containing supercritical water to produce the complex Au(HS)(H2S)3. A temperature decrease below 400°C and/or pressure decrease lead to a decomposition of this complex and, hence, to a rapid precipitation of metallic gold. This chemistry represents a chemical mechanism underlying leaching of metallic gold from deep parts of Earth's crust, its transport in hydrothermal solutions, and subsequent deposition in gold veins.

AB - Metallic gold dissolves in H2S-containing supercritical water to produce the complex Au(HS)(H2S)3. A temperature decrease below 400°C and/or pressure decrease lead to a decomposition of this complex and, hence, to a rapid precipitation of metallic gold. This chemistry represents a chemical mechanism underlying leaching of metallic gold from deep parts of Earth's crust, its transport in hydrothermal solutions, and subsequent deposition in gold veins.

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M3 - Short survey

SN - 1431-9268

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EP - 356

JO - Chemtracts

JF - Chemtracts

IS - 5

ER -

Gold solubility in supercritical hydrothermal brines measured in synthetic fluid inclusions

Abstract

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